Agroup or chain of islands is called

A group or chain of islands is called Archipelago.  Archipelago's can be found isolated near a land mass. A great example of Archipelago can be found near Scotland as it is surrounded by almost 700 islands including the mainland. Island chains can be seen in different places around the world and in different formations as well.

The answer to your question is d. convection currents. hope this you.

Palestine is the answer